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onsemi SZBZX84B9V1LT3G
- Part No.:
- SZBZX84B9V1LT3G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84B9V1LT3G.pdf
- Description:
- DIODE ZENER 9.1V 250MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SZBZX84B9V1LT3G from onsemi is a tight-tolerance Zener diode in SOT-23 package, providing precise 9.1 V voltage regulation at 5 mA test current with ±1% nominal voltage tolerance (8.92–9.28 V), 15 Ω dynamic impedance, and 0.5 μA reverse leakage at 7.3 V. It delivers stable reference voltage for power supply feedback, overvoltage protection, and precision biasing in space-constrained portable electronics.
For engineers reviewing the SZBZX84B9V1LT3G datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q101 qualification, 130 pF capacitance at 0 V/1 MHz, ±3.8 mV/°C temperature coefficient, and Pb-free SOT-23 footprint compatibility with automated assembly.
Technical Context
This device operates as a two-terminal voltage reference using controlled avalanche breakdown in silicon. Its tight 1% Zener voltage tolerance is achieved via process-controlled doping and laser trimming, enabling accurate regulation without external calibration. The SOT-23 package supports thermal dissipation up to 250 mW on FR-5 board with 500 °C/W junction-to-ambient resistance.
Designed for automotive and industrial applications, SZBZX84B9V1LT3G features Class 3 ESD robustness (>16 kV HBM), −65 °C to +150 °C operating range, and RoHS-compliant Pb-free construction. Its cathode-anode polarity and no-connection terminal (Pin 2) define unidirectional conduction and simplify PCB layout verification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 9.1 V nominal at 5 mA; tight 8.92–9.28 V range ensures <±1% output variation in feedback loops |
| Dynamic Impedance | 15 Ω at 5 mA; low impedance maintains stable regulation under load transients |
| Reverse Leakage | 0.5 μA max at 7.3 V; minimal current draw preserves battery life in always-on circuits |
| Temperature Coefficient | +3.8 mV/°C; predictable drift enables compensation in wide-temperature environments |
| Capacitance | 130 pF at 0 V, 1 MHz; low capacitance avoids signal coupling in high-frequency sensing paths |
| Power Dissipation | 250 mW on FR-5 board; sufficient headroom for 9.1 V × 27 mA continuous operation |
| ESD Rating | Class 3 (>16 kV HBM); withstands handling and system-level electrostatic discharge events |
Pinout & Package
SOT-23 (TO-236) surface-mount plastic package, 2.90 × 1.30 × 1.00 mm, void-free thermosetting case with corrosion-resistant finish. Cathode indicated by band; maximum soldering temperature 260 °C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Forward-biased terminal; connects to lower-potential node in regulation path |
| 2 | No Connection | Internally isolated; must remain unconnected on PCB to avoid parasitic coupling |
| 3 | Cathode | Zener breakdown terminal; connects to regulated output or reference node |
Key Features
| Feature | Design Value |
|---|---|
| Tight voltage tolerance | ±1% (8.92–9.28 V) enables direct replacement of higher-cost references in cost-sensitive designs |
| AEC-Q101 qualification | Validated for automotive powertrain and body electronics per stress test requirements |
| Pb-free & RoHS compliance | Meets global environmental regulations without compromising thermal or electrical performance |
| High ESD immunity | Class 3 (>16 kV HBM) eliminates need for external TVS in handheld and infotainment systems |
| Optimized for automated assembly | SOT-23 footprint and marking (T17) support high-yield pick-and-place and AOI inspection |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating 9.1 V reference for microcontroller ADC and CAN transceiver bias rails in door module PCBs. IC Role / Device Role / Timing Role: Two-terminal voltage reference establishing stable analog reference point independent of input rail fluctuations. Use Value: Tight 1% tolerance eliminates calibration steps during production; AEC-Q101 rating ensures reliability across −40 °C to +125 °C ambient. |
Use Scenario: Providing precision bias voltage for bridge amplifier inputs in pressure transducer front-ends. IC Role / Device Role / Timing Role: Zener shunt regulator maintaining fixed reference despite 12–24 V supply variations in factory automation equipment. Use Value: Low 15 Ω dynamic impedance minimizes reference shift under sensor excitation current changes; 130 pF capacitance avoids noise coupling into mV-level signals. |
| Portable Medical Pulse Oximeter | 5G Small Cell Power Management |
Use Scenario: Stabilizing LED driver reference in battery-powered oximeters requiring consistent optical output intensity. IC Role / Device Role / Timing Role: Low-leakage (0.5 μA) voltage clamp protecting analog front-end from overvoltage during battery charging cycles. Use Value: Ultra-low reverse current extends single-charge runtime; Class 3 ESD rating prevents field failures during clinical handling. |
Use Scenario: Generating local 9.1 V bias for RF power amplifier bias control ICs in outdoor small cell base stations. IC Role / Device Role / Timing Role: Temperature-compensated reference source with +3.8 mV/°C coefficient matching PA gain drift characteristics. Use Value: Predictable TC simplifies thermal compensation algorithms; SOT-23 size enables dense RF board layouts without thermal derating penalties. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84B9V1LT3G | Same 9.1 V nominal, ±1% tolerance, and SOT-23 package but lacks AEC-Q101 qualification and automotive traceability controls. | Restricted to commercial-grade consumer or industrial applications without automotive lifecycle requirements. | Select when automotive PPAP documentation and extended temperature validation are unnecessary. |
| SZBZX84B9V1LT1G | Identical electrical specs and AEC-Q101 qualification, but supplied in 3,000-piece tape-and-reel versus 10,000-piece for LT3G variant. | Preferred for prototyping or low-volume production where smaller reel sizes reduce inventory overhead. | Choose for NPI phases or when matching existing SMT line reel capacity constraints. |
Compared with BZX84B9V1LT3G and SZBZX84B9V1LT1G, SZBZX84B9V1LT3G offers identical regulation performance and automotive qualification while optimizing for high-volume manufacturing via larger 10,000-piece reels-reducing changeover frequency and material handling cost per unit.
Availability
SZBZX84B9V1LT3G is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, portable medical devices, and 5G infrastructure requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SZBZX84B9V1LT3G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
onsemi is a global semiconductor supplier delivering energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and IoT applications.
SZBZX84B9V1LT3G belongs to the SZBZX84Bxxx series of AEC-Q101-qualified Zener diodes designed specifically for automotive subsystems requiring high reliability, tight voltage tolerance, and robust ESD immunity in compact SOT-23 packages.
FAQ
What is the Zener voltage tolerance of SZBZX84B9V1LT3G?
SZBZX84B9V1LT3G has a nominal Zener voltage of 9.1 V with a tight tolerance range of 8.92 V to 9.28 V at 5 mA test current, corresponding to ±1% deviation. This specification is verified per onsemi's BZX84BxxxL tight-tolerance series characterization and supports precision voltage reference applications without external trimming.
Is SZBZX84B9V1LT3G qualified for automotive use?
Yes, SZBZX84B9V1LT3G is AEC-Q101 qualified and PPAP capable, meeting stress test requirements for automotive powertrain, body, and chassis electronics. Its qualification includes temperature cycling, humidity testing, and mechanical shock validation across −65 °C to +150 °C junction range.
What is the pin configuration of SZBZX84B9V1LT3G?
SZBZX84B9V1LT3G uses the SOT-23 package with Pin 1 as anode, Pin 2 as no connection (internally isolated), and Pin 3 as cathode. The cathode is marked by a polarity band on the package body, and Pin 2 must remain unconnected on the PCB to prevent unintended circuit interaction.
How does the temperature coefficient affect SZBZX84B9V1LT3G performance?
SZBZX84B9V1LT3G exhibits a temperature coefficient of +3.8 mV/°C at 5 mA, meaning its Zener voltage increases predictably with rising junction temperature. This linear drift allows system designers to compensate reference errors in wide-temperature applications such as under-hood automotive modules.
What packaging option does SZBZX84B9V1LT3G use?
SZBZX84B9V1LT3G is supplied in Pb-free, RoHS-compliant tape-and-reel packaging with 10,000 units per reel. The SOT-23 (TO-236) case 318 outline measures 2.90 × 1.30 × 1.00 mm and is optimized for automated surface-mount assembly on FR-5 or alumina substrates.
SZBZX84B9V1LT3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- SZBZX84BxxxLT1G
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 9.1 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
SZBZX84B9V1LT3G FAQ
1.How can I place an order for SZBZX84B9V1LT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84B9V1LT3G on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SZBZX84B9V1LT3G reliable?
The price and inventory of SZBZX84B9V1LT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84B9V1LT3G is usually 5 days.
3.What payment methods are accepted for SZBZX84B9V1LT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84B9V1LT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84B9V1LT3G?
SZBZX84B9V1LT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84B9V1LT3G order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SZBZX84B9V1LT3G?
For technical support, including SZBZX84B9V1LT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84B9V1LT3G requirements.
6.How does Aetrix verify that SZBZX84B9V1LT3G is sourced from the original manufacturer or authorized distributors?
All SZBZX84B9V1LT3G products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SZBZX84B9V1LT3G meets industry standards.
7.What is the process for return or replacement of SZBZX84B9V1LT3G?
All SZBZX84B9V1LT3G units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84B9V1LT3G, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SZBZX84B9V1LT3G part is unused and in its original packaging.
Return procedure for SZBZX84B9V1LT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZBZX84B9V1LT3G Tags
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